Question about 2003 Toyota Corolla

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Flashing lights in a pattern around four quick blinks and then a steady on and then back to the blinks. This occurs when opening the door. The head lights also turn off on and on while driving at nigh

When opening the door the park lights flash in a pattern of around four quick times and then steady on and then back to the blinking. Driving at night the lights turn on and off also making it necessary to use high beam.

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Good morning! I would suspect a defective light control sensor...see images below...Cost is approx. $150.00


flashing lights in a pattern around four quick bli - 60e601bc-c4ff-4ad3-ac39-e4e0d91496d2.jpg

ccc3daf1-3e7c-4dfb-b9f2-71661b689e0c.jpgGuru...saailer

I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

Posted on Mar 18, 2014

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Posted on Jan 02, 2017

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Is the flashing steady or is there a pattern to it? If there is a pattern, count the flashes. This will give you error codes relating to the TCU/ECU (Transmission/Electronic Control Unit). If the flashes are steady then it could mean that the TCU itself is bad.
1 long = x10
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So 1 long and 5 short=15
Please check the light and respond as to whether or not the flashing is steady or not. If not please include the code that is being flashed. Also, include model of the vehicle.

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Turn signals come on but do not blink.


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